class CreateAuthorsMaterialsRestrictions < ActiveRecord::Migration
   def self.up
#	execute "ALTER TABLE authors_materials ADD CONSTRAINT fk_materials FOREIGN KEY (material_id) REFERENCES materials(id)"
#	execute "ALTER TABLE authors_materials ADD CONSTRAINT fk_authors FOREIGN KEY (author_id) REFERENCES authors(id)"
  end

  def self.down
#	execute "ALTER TABLE authors_materials DROP CONSTRAINT fk_materials"
#	execute "ALTER TABLE authors_materials DROP CONSTRAINT fk_authors"
  end
end
